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Vibrating Fork Level Switches for Liquids & Solids

Vibrating fork level switch consists of two forks or two arms which vibrate continuously because of their contact with piezo electric crystals. Hence the name vibrating fork. The tuning fork vibrates at its mechanical resonance frequency of about 1000 Hz. The frequency changes when the fork is covered by the medium. This change is detected by the integrated oscillator and converted into an output – Relay, PNP or analog.

The material could be a viscous liquid, slurry or even free flowing powders. (Contact our technical team to help you decide the type of fork to be used.)

Features :

  • Compact size, rugged design
  • Proven Technology
  • No Calibration required
  • Universal power supply 230VAC & 11-55VDC on our selected models.
  • Suitable for all types of solids, powders, liquids and viscosity upto 10,000cp
  • Can offer for high temperature and high pressure applications (on request)
  • Suitable for hazardous area
  • Unaffected by flow, bubbles, turbulence, foam, solid contents etc.
  • No moving parts, maintenance free.
  • Custom length available.

Application :

  • Pharmaceuticals
  • Pulp & Paper Processing
  • Food & Beverages.
  • Rocks, Sand & Gravels.
  • Dairy
  • Mining
  • Plastics

  • Make MAHALAXMI
  • Model – MVF-L-16-T-1B-D-OC-S
  • Type – Miniature Vibrating fork level switch
                for liquids
  • Process Connection – 1”BSP (M)
  • Make MAHALAXMI
  • Model – MVF-LM-16-T-B-D-OC-S
  • Type – Miniature Vibrating fork level switch
                for liquids
  • Process Connection – ¾”BSP (M)
M.O.C SS316
Enclosure DIN 43650 Plug and Socket
Max operating temperature Standard upto 80°C (higher temperature upto 200°C can be given)
Max operating pressure 10kg/cm²
Cable Entry PG9
Total Length Standard as per above (extra length on request)
Power Supply 11-55 VDC
Output Open collector (Transistor) PNP/ NPN
LED indication For switching (red) & normal mode (green)
Minimum fluid density >0.7gm/cc
Maximum fluid Viscosity Upto 10,000 cp


  • Make MAHALAXMI
  • Model – MVF-L-16-T-1B-F-R1-S
  • Type – Flameproof Vibrating fork level switch
                for liquids
  • Process Connection – 1”BSP (M)
  • Make MAHALAXMI
  • Model – MVF-L-16-TC-1-F-R1-S
  • Type – Flameproof Vibrating fork level switch
                for liquids
  • Process Connection – 1” TC
M.O.C SS316
Enclosure Flameproof suitable for Gr II A & II B ( IIC on request )
Max operating temperature Standard upto 80°C (higher temperature upto 200°C can be given)
Max operating pressure 10kg/cm²
Cable Entry M20 or 3/4" E.T.
Total Length Standard as per above (extra length on request)
Power Supply 24 VDC
Output PNP/ NPN OR Potential free relay contacts
LED indication For switching (red)
Minimum fluid density >0.7gm/cc
Maximum fluid Viscosity Upto 10,000 cp


  • Make MAHALAXMI
  • Model – MVF-S-16-T-2B-A-R2-200 MM
                   (High Temperature Model)
  • Model – MVF-S-16-T-2B-A-R2-S
  • Type – Weatherproof / Flameproof Vibrating fork
               level switch for dry powders, crystals, grains,
               granules & liquids upto 10000 cp.
  • Process Connection – 1 ½”BSP (M)
  • MOC – SS316 (Other Materials available on request)
Max operating temperature Standard upto 80°C (higher temperature upto 200°C can be given)
Max operating pressure 10kg/cm²
Cable Entry M20 or 3/4" E.T. - 2 nos.
Total Length Standard OR Extra length on request
Power Supply 19 TO 260 V AC, 50/60 Hz & 11 to 55 VDC
Output PNP/ NPN OR Potential free relay contacts
Time Delay Adjustable from 1 to 20 second for probe covered & uncovered condition.
LED indication For switching (red)